The Carrion Crow is a divination card. A set of four can be exchanged for a random magicarmour item. The resulting item will also have any one of the prefixes that is eligible to appear on that item and grants +X to maximum Life. (See § List of possible prefixes.)
The Carrion Crow no longer appears to drop in The City of Sarn. [Verified on DivcordThis information has been verified by players on Divcord, the divination card discovery Discord server. Actual undocumented changes to drop locations may have occurred in a previous patch.]
The Carrion Crow no longer appears to drop in maps. [Verified on DivcordThis information has been verified by players on Divcord, the divination card discovery Discord server. Actual undocumented changes to drop locations may have occurred in a previous patch.]
The Carrion Crow now also drops from Oriath Square. [Verified on DivcordThis information has been verified by players on Divcord, the divination card discovery Discord server. Actual undocumented changes to drop locations may have occurred in a previous patch.]